Electrically controlled variable pressure pneumatic circuit

Details Electrically controlled variable pressure pneumatic circuit Electrically controlled variable pressure pneumatic circuit

1987-06-01

1988-10-11

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Switching systems

Condition responsive

1374875, 137557, 290 40R, 364510, F16K 1720

Patent

active

047773839

ABSTRACT:
A pneumatic circuit pressure control device including an electronic comparator for comparing a transducer generated pressure signal from the pneumatic circuit and a desired pressure signal from a desired pressure input generator. The comparison circuit selectively actuates a solenoid-actuated valve which controls the pressure in the pneumatic circuit. Preferably, the solenoid of the solenoid-actuated valve produces an electromagnetic field for electromagnetic induction of a circuit which oscillates the solenoid-actuated valve to produce a variable orifice-like effect when small changes in pressure are demanded by the comparator circuit.

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